Focus on cs'ing and poke when possible. Look for powerspikes and play off them. Jungle pressure mid is nice because zed cant easily 100 to 0 somone with 1 point in his ult.

Go for an early split push because when zed gets 2 points in his ult, his threat will increase massively. remember thhat some ***asains fall off late game so you need to try to win before the 30 min mark.